Criminal charges don't appear likely for the man taken into custody Tuesday after a three-hour SWAT standoff that parts of the Victory Park and downtown areas on lockdown, a police spokesman said Wednesday.

Sgt. Warren Mitchell said criminal charges haven't been ruled out, but officers never recovered a gun from the apartment and didn't find any shell casings. He also said it's unclear how or when the window was broken, but responding officers saw the hole in the glass after residents reported hearing gunshots.

Police locked down The Perot Museum, the W Hotel, the Dallas World Aquarium and Booker T. Washington High School for the Performing and Visual Arts in response. Deputy Chief Scott Walton said Tuesday that police feared an active shooter with a good vantage point in a highly populated area with popular attractions.

Walton said Wednesday that police were only dealing with what they knew -- witnesses said shots had been fired, a man was barricaded in his apartment, and his window had a hole in it.

"We handled the situation appropriately based on the information we had at the time," he said.